Robinson, J. (1969). Introduction to the theory of employment (2nd ed.). Macmillan; St. Martin's P..

Robinson, Joan. Introduction to the Theory of Employment. 2nd ed. London, New York: Macmillan; St. Martin's P., 1969.

Robinson, Joan. Introduction to the Theory of Employment. 2nd ed. Macmillan; St. Martin's P., 1969.